Marker for cylindrical work



Aug. 17, 1943. J. w. MacANLlS MARKER FOR CYLINDRICAL WORK Filed April 12, 1941 IlI I nI ll.

axially and yet permit the spindle tobe turned At its outer extremities'the spindle is provided with' trunnions l4 and 16 which are rotatable in bearing apertures 18 and 80 formed in the side frame members l2 and I4.

Locateduat diametricallyopposite. points and."

V at equal distances from the axis of the; spindle "(0, guiderods 82 and 84 are fixedly, secured to the type wheel. These rods pass freely throughholes in the guide wheels 86' and 88, V i

stitutions..of equivalents may be made by those which have inwardly converging ffrusto' conical' work engaging guide faces 53 and 82 disposed internally threaded, the threads being of opposite hand so as to engage the correspondingly screw' threaded portions 98 and Illp of -the spindle. 1

left hand threads- At its right extremity the spindle has pinned or otherwise secured thereto a knurled cr'rnilled thumbwheel 'IUZ'which is adapted to causelthe guide wheelsrilfifand 88 to either approach or rec'ede from the type wheel 64. Threaded on opposite'portions of the spindle there are knurled or milled lock nuts' It'll and [06 which serve to hold the guide-wheels 86 and 88 in any desired position (if-adjustment.-

It' will be understood that prior to manipulation of the axes ,of the fwork. 7

While I I' have' considerable detail the design and construction of the embodiment 0: the invention herein' illustrated,-it is to bej'understood that various modifications and subskilled in the, artjwithout departing from the inventionjaSidefined 'in the appended claims.

Ifclairni I a 1 V 1. A device for printing on cylindrical articles fsuch'as pipe orrods comprising a mobile frame;

a spindle journaled therein having oppositely threaded portions carrying respective spaced article engaging guide wheels having oppositely beveled inwardly converging peripheral faces, a-type wheelsupported on saidQspindle midway between said guide wheels, and means interengaging the"type wheeland shaft for preventing relative axial shifting thereof. J a

2. A-devic'e for printing on cylindrical articles such as pipe or rods comprising a movable frame,

a spindle journaled therein-carrying a pair of spaced article engaging lguide wheels having peripheral faces corresponding-to opposed cones, altype wheelimounted on the spindle midway between said guide wheels, means interengaging thumb nut l 02 the lock nuts must be releasedby- .turning "them in the' 'fappropriate dire'ction'frelaqtive'to-the respective threaded portions oftlie spindle, It'will alsobe apparent that after 'the' I lock nuts have been backed away'and the thumb wheel .102 is turnedjthe guide wheelswill 'be. V propelled toward oraw'ay'f rom the type'wh'eelj H *depending, of course, upon the direction of ro 'tation of -the spindle; -"During such "adjustment of the guide wheels it will be understood that.

the guide rods 82 and 84 prevent'the'wheel's turning with the spindle, thus compelling the guide wheels to partake of adjusting movements in a direction lengthwise of the spindle, This permits of properpositioningof the guide wheels with relation to the type whe r'ro; printing on pipe of varying sizes; a 4:1,}

In the normal 'operation of themarking device illustrated the inwardly converging frusto- 'conicalfaces 90' and 92'will havefportions thereof lying tangent with the cylindrical surface'fo'f the-pipeor other objecttobe marked. Both cylindricalv surfaces 90 and-jfiz are disposed'a t' identically the same angle. Therefore; asviewed in Figure 4 the vertical line passing through the center of the face of the type wheel bisects the included angle between saidfaces 90 and 92 of the wheel. As thus'arrangedj, the center line of the type wheel will always lie on the bisector of the angle regardless or'the position of adjustment securedby turningthe spindle in 'view of thefaot that the rightfand left hand threaded portions-98 and lllll of thespindleare of identi'- cal pitch. This arrangement is advantageous since it provides a'relatively simple yet reliable means for laterally adjusting the guide wheels ior'printing on pipe or rods of difiereri tdiamthe'type wheel and shaftzfor preventing'relative axial shifting thereof 'and'adjusting means for simultaneously moving both guide wheels equal distances'toward or from'thetype wheel.

3. AidBVlCB for printing on cylindrical articles such aspipe or rods comprising a movable frame, a spindle journaled-therein carryinga pair of spaced article 1 engaging guide wheels having peripheral faces corresponding to opposed cones, a typewheelfirotatably mounted on the spindle ;midway-between said guidewheels and adjusting means for simultaneously moving both guide Wheels equal distances toward or from the type wheel,.means interengaging the type wheel and shaft for preventing relative axial shifting thereofand interengaging means between the type wheel and said guide wheels compelling all three to turnin' unison y'et permitting of rela- ;.tive longitudinal'adjustmentf of the guide wheels along said spindleI-"' a l "4."A device for printing onc'y n articles such as pipe or rods comprising'a' movable frame.

I a spindle journaled therein carrying'apair of *spaced article. engaging conelike guide wheels with their: inclined"'faces converging inwardly toward one anotherj a i type wheel rotatably mounted on the spindle therebetween, said spindle having respective oppositely threaded I screw portions-in threaded engagement with said giuide wheels,:means intereingaging the {type wheel and shaft for preventing relative axial shitting thereof 7 and interengaging means between the type wheeland said guide wheels compelling all three to -turn inunison yet permitting of relative longitudinal adjustment of the guide wheels along said spindle. V

v :JAMES W. MAcANLIS, 

